"""
Case Type   : 多块预读
Case Name   : 开启预读块，dml语句中子查询
Create At   : 2024/12/04
Owner       : @li-xin12345
Description :
    1、建表，重启
    2、insert语句扫描表
    3、update语句中扫描表
    4、delete语句中扫描表
    5、查看日志中打印的预读块数量
    6、清理环境
Expect      :
    1、成功
    2、成功
    3、预读了设置的块数量
    4、成功
    5、预读了设置的块数量
    6、成功
History     :
"""
import os
import unittest

from yat.test import Node
from yat.test import macro

from testcase.utils.Common import Common
from testcase.utils.CommonSH import CommonSH
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger


class SessionTest(unittest.TestCase):
    def setUp(self):
        self.log = Logger()
        self.log.info(f'-----{os.path.basename(__file__)} start-----')
        self.constant = Constant()
        self.common = Common()
        self.pri_sh = CommonSH('PrimaryDbUser')
        self.pri_user_node = Node('PrimaryDbUser')
        self.tb_name = 't_multi_bulk_read_0015'
        self.pg_log = \
            os.path.join(macro.PG_LOG_PATH, macro.DN_NODE_NAME.split('/')[0])

    def test_multi_bulk_read(self):
        text = '----step1: 建表，重启；expect: 成功----'
        self.log.info(text)
        sql = f'''drop table if exists {self.tb_name} cascade;
        create table {self.tb_name} (
            o_orderkey bigint not null,
            o_custkey integer not null,
            o_orderstatus char(1) not null,
            o_totalprice decimal(15,2) not null,
            o_orderdate date not null,
            o_orderpriority char(15) not null,
            o_clerk char(15) not null,
            o_shippriority integer not null,
            o_comment varchar(79) not null
        );
        insert into {self.tb_name} values (599999968, 2271617, 'O', 
        181129.56, '1995-12-14', '4-NOT SPECIFIED', 'Clerk#000099834', 
        0, 'equests are blithely. final deposits are slyly iron');
        insert into {self.tb_name} values (599999969, 4063478, 'F', 
        93255.68, '1994-04-20', '1-URGENT', 'Clerk#000008803', 0, 
        'haggle blithely above the accounts. blithely fina');
        insert into {self.tb_name} values (generate_series(1, 100000, 2), 
        454411, 'O', 105846.51, '1996-03-31', '3-MEDIUM', 
        'Clerk#000070424', 0, 'test');
        insert into {self.tb_name} values (generate_series(2, 100000, 2), 
        14864260, 'F', 109713.24, '1993-10-19', '2-HIGH', 
        'Clerk#000050083', 0, 'sual requests. pending, fi');
        '''
        res = self.pri_sh.execut_db_sql(sql)
        self.log.info(res)
        self.assertIn(self.constant.DROP_TABLE_SUCCESS, res, f'执行失败：{text}')
        self.assertIn(self.constant.CREATE_TABLE_SUCCESS,
                      res, f'执行失败：{text}')
        self.assertEqual(res.count('INSERT 0 1'), 2, f'执行失败：{text}')
        self.assertEqual(res.count('INSERT 0 50000'), 2, f'执行失败：{text}')

        msg = self.pri_sh.restart_db_cluster()
        self.log.info(msg)
        status = self.pri_sh.get_db_cluster_status()
        self.assertTrue("Degraded" in status or "Normal" in status)

        text = '----step2: insert语句扫描表；expect: 成功----'
        self.log.info(text)
        sql = f"set heap_bulk_read_size = 8;" \
              f"insert into {self.tb_name} select * from {self.tb_name};"
        res = self.pri_sh.execut_db_sql(sql)
        self.log.info(res)
        self.assertIn(self.constant.SET_SUCCESS_MSG, res, f'执行失败：{text}')
        self.assertIn('INSERT 0 100002', res, f'执行失败：{text}')

        text = '----step3: update语句中扫描表；expect: 成功----'
        self.log.info(text)
        sql = f"set heap_bulk_read_size = 8;" \
              f"update {self.tb_name} set o_orderkey = 1;"
        res = self.pri_sh.execut_db_sql(sql)
        self.log.info(res)
        self.assertIn(self.constant.SET_SUCCESS_MSG, res, f'执行失败：{text}')
        self.assertIn('UPDATE 200004', res, f'执行失败：{text}')

        text = '----step4: delete语句中扫描表；expect: 成功----'
        self.log.info(text)
        sql = f"set heap_bulk_read_size = 8;" \
              f"delete from {self.tb_name} where o_orderkey > 0;"
        res = self.pri_sh.execut_db_sql(sql)
        self.log.info(res)
        self.assertIn(self.constant.SET_SUCCESS_MSG, res, f'执行失败：{text}')
        self.assertIn('DELETE 200004', res, f'执行失败：{text}')

        text = '----step5: 查看日志中打印的预读块数量；expect: 预读了设置的块数量----'
        self.log.info(text)
        cmd = f"cd {self.pg_log};" \
              f"ls -t | head -1 | awk '{{{{print $1}}}}' | " \
              f"xargs cat | tail -90 | " \
              f"grep 'End of pre-Read, the max blocks batch is'"
        self.log.info(cmd)
        res = self.common.get_sh_result(self.pri_user_node, cmd)
        self.log.info(res)
        self.assertIsNotNone(res, f'执行失败：{text}')

    def tearDown(self):
        text = '----step6: 清理环境;expect:成功----'
        self.log.info(text)
        sql = f"drop table if exists {self.tb_name} cascade;"
        res = self.pri_sh.execut_db_sql(sql)
        self.log.info(res)
        self.assertIn(self.constant.DROP_TABLE_SUCCESS, res, f'执行失败：{text}')
        self.log.info(f'-----{os.path.basename(__file__)} end-----')
